2007 YAMAHA YBR125 Owners Manual

1. Nut
2. Cotter pin
3. Tension bar1. Place the Motorcycle on the
centerstand.
2. Remove the cotter pin and nut.
Then remove the tension bar
from the brake shoe plate.
1. Axle nut
2. Cotter pin
3. Brake rod
4. Brake adjusting nut3. Remove the brake adjusting nut
and brake rod from the brake cam
lever.
4. Remove the axle nut cotter pin
and the axle nut.
1. Rear axle5. Pull out the rear axle.
6. Remove the wheel assembly.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-31
ALWAYS USE YAMAHA GENUINE SPARE PARTS

Rear wheel installation1. Install the rear wheel and the
axle.
2. Install the axle nut.
3. Insert the brake rod into the
brake cam lever and install the
brake free play adjusting nut.
4. Install the tension bar onto the
brake shoe plate and tighten the
tension bar nut to the specified
tightening torque.
5. Take the Motorcycle off the
centerstand.
6. Tighten the axle nut to the
specified tightening torque.
Then install a new cotter pin.
Specified torque:
Tension bar nut:
14 ft-lb (1.9 m kg)
Axle nut:
65 ft-lb (9.05 m kg)Always use a new cotter pin.
Check the operation of the brake
light after adjusting the rear brake. 7. Adjust the rear brake pedal free
play. (See page 6-17.)
TroubleshootingAlthough YAMAHA Motorcycles
receive a rigid inspection before
shipment from the factory, trouble
may occur during operation. Any
problem in the fuel, compression, or
ignition systems can cause poor
starting and loss of power. The
troubleshooting chart describes a
quick, easy procedure for making
checks. If your Motorcycle requires
any repair, bring it to a YAMAHA
dealer. The skilled technicians at a
YAMAHA dealership have the tools,
experience, and know-how to
properly service your Motorcycle.
Use only genuine YAMAHA parts
on your Motorcycle. Imitation
parts may look like YAMAHA
parts, but they are often inferior.
Consequently, they have a shorter
service life and can lead to
expensive repair bills.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
WARNINGWARNING

Ask YAMAHA dealer to inspect.compression check. Engine doesn't start, go to
Dry with
Black SootWet No compression.
There is compression
electrode. plug and check Remove spark Use kick starter.
Wipe clean with dry cloth
and correct spark plugGo to Ignition check. Enough fuel
No fuelGO TO compression check
in the fuel tank Check if there is fuel
Supply fuel.
Open the throttle half-way
and start the engine.
or replace spark plug.
WARNING
Never Check the fuel system while smoking or in the vicinity of an open flame.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-33Ask YAMAHA
dealer to inspect.
Troubleshooting chart - For Starting
1. Fuel
2. Compression
3. Ignition
If Engine does not start
Contact YAMAHA dealer.

A. CLEANINGFrequent, thorough cleaning of your
Motorcycle will not only enhance its
appearance but will improve its
general performance and extend
the useful life of many components.1. Before cleaning the Motorcycle:
a. Block off the end of the exhaust
pipe to prevent water entry; a
plastic bag and strong rubber
band may be used.
b. Make sure the spark plug and all
filler caps are properly installed.
2. If the engine case is excessively
greasy, apply degreaser with a
paint brush. Do not apply
degreaser to the chain, sprockets,
or wheel axles.
3. Rinse the dirt and degreaser off
with a garden hose. Use only
enough pressure to do the job.Direct excessive Hose Pressure
may cause water Entry Into Wheel
Bearing, Front Fork Brakes,
Transmission Seals & Electrical
Parts, there-by leading to its
Detorioration.
7-1
Improper cleaning can damage
the cowlings, panels and other
plastic parts. Use only a soft,
clean cloth or sponge with mild
detergent and water to clean
plastic.
Do not use any harsh chemical
products on plastic parts.
Alaways use clean cloth or
sponge for cleaning the
Motorcycle.
CAUTION :4. After riding on dirty roads, wash
the Motorcycle with cold water
immediately. Do not use warm
water to clean the tyre.
5. Once the majority of the dirt has
been hosed off, wash all surfaces
with warm water and mild,
detergent-type soap. An old
toothbrush or bottle brush is
handy for hard-to-get-at places.
6. Rinse the Motorcycle off
immediately with clean water and
dry all surfaces with a chamois,
clean towel, or soft absorbent
cloth.
7. Dry the chain and lubricate it to
prevent rust.
CAUTION :CLEANING AND STORAGE

8. Clean the seat with a vinyl
upholstery cleaner to keep the
cover pliable and glossy.
9. Automotive-type wax may be
applied to all painted and chrome-
plated surfaces. Avoid
combination cleaner waxes. Many
contain abrasive which may mar
the paint or protective finish. When
finished, start the engine and let it
idle for several minutes.
B. STORAGELong term storage (60 days or more)
of your Motorcycle will require some
preventive procedures to guard
against deterioration. After thor-
oughly cleaning the Motorcycle,
prepare for storage as follows:
1. Drain the fuel tank, fuel lines, and
carburetor float bowl.
2. Remove the empty fuel tank, pour
a cup of SAE 10W30 or 20W40
motor oil in the tank, shake the
tank to coat the inner surfaces
thoroughly and drain off the
excess oil. Reinstall the tank.
3. Remove the spark plug, pour
about one tablespoon of SAE
10W30 or 20W40 motor oil in the
spark plug hole and reinstall the
spark plug. Kick the engine over
several times (with the ignition off)
to coat the cylinder wall with oil.
4. Remove the drive chain.
Thoroughly clean the chain withsolvent and lubricate it. Reinstall
the chain or store it in a plastic bag
(tied to frame for safe-keeping).
5. Lubricate all control cables.
6. Block up the frame to raise both
wheels off the ground.
7. Tie a plastic bag over the
exhaust pipe outlet to prevent
moisture from entering.
8. If storing in a humid or salt-air
atmosphere, coat all exposed
metal surfaces with a light film of
oil. Do not apply oil to any rubber
parts or the seat cover.
9. Remove the battery and charge it.
Store it in a dry place and
recharge it once a month. Do not
store the battery in an excessively
warm or cold place (less than 0ºC
or more than Ambient).
Make any necessary repairs before
storing the Motorcycle.
CLEANING AND STORAGE
7-2
NOTE :

SPECIFICATIONS
8-1
SpecificationsModel LIBERO (5TS8)
Dimensions
Kerb weight :(With Engine Oil &
90% Fuel in Tank)- 119Kg.
Engine ::
Overall length 2,000 mm
Overall width 730 mm
Overall height 1,050 mm
Seat height (Upto Rider) 800 mm
(Upto Pillion Rider) 850 mm
Wheelbase 1,290 mm
Ground clearance 173 mm
Minimum turning radius 2,000 mm
Engine type
Cylinder arrangement
Displacement
Bore x Stroke 49X56
Compression ratio 9 : 1
Starting system
Lubrication system
Maximum power 7.6
Maximum torque 0.80Air cooled 4-stroke,SOHC
Forward inclined single
cylinder
106 cm
mm
Kick starter
Wet sump
PS(5.59 KW) @ 7500
Kgm. @ 6000
3
RPM
RPM
EngineOil:
Capacity
Air filter:
Fuel :
Carburettor:Type:
:
Periodic oil change 1.0
Total amount
Type G
Fuel tank capacity
Reserve amount
Type Variable Venturi Type
Manufacturer M/S Keihin Fie PrivateBe sure to use motor oils that do not contain
antifriction modifiers. Passenger car motor oils (often
labelled Energy conserving) contain anti-friction
additives which will cause clutch and/or starter clutch
slippage, resulting in reduced component life and
poor engine performance.
YAMALUBE 4-Stroke motor
oil (20W40 type SG)
L
1.2 L (First fill/Overhaul)
Wet type element
asoline (Petrol)
13.0 Litres
1.7Litres
Limited India.
CAUTION :

8-2
Spark plug :
Clutch type :
Transmission :
Chassis: Type/Manufacturer P-RA7HC--(CHAMPION)
Spark plug gap 0.8 ± 0.1 mm
Primary reduction system Spur gear
Primary reduction ratio 3.722 (67/18)
Secondary reduction system Chain drive
Secondary reduction ratio 3.214 (45/14)
Transmission type Constant mesh 4 speed
Operation
Gear ratio 1st 3
2nd 1.688 (27/16)
3rd 1.200 (24/20)
4th 0.875 (21/24)
Frame type Double Cradle
Caster angle
Trail 91mmWet, multiple-disc
Left foot operation
.000 (33/11)
26.4
o
Tyre with Tube
Size
Front
Rear 3.00
Air pressure (cold tyre ):
Single Rider
Front
Rear 33
With Pillion and rider
Front
Rear2.75 x18” 4PR
X18” 6PR
25 psi (1.75 Kgf/cm )
psi (2.25Kgf/cm )
25 psi (1.75Kgf/cm )
36 psi (2.5 Kgf/cm )
2
2
2
2
SPECIFICATIONS

SPECIFICATIONS
8-3
Wheels:
Brakes:
Suspension :
Shock absorberType:
Size:
Front :
Type Drum brake
Operation Right Hand lever
Front Telescopic fork
Rear
:
Front Coil spring/ oil damper
RearFront Spoke wheel
Rear Spoke wheel
Front 1.60 X 18
Rear 1.60 X 18
Rear :
Type Drum brake
Operation Right foot operation
Swing arm
Coil spring/ oil damperWheel travel:
Electrical:
Bulb voltage ,Wattage x Quantity:
Fuse:Front 120 mm
Rear: 90 mm
Ignition system: CDI (Digitally Timing
Generator system:
Type
Standard output 12V
Battery:
Type
Voltage, capacity
Headlight
Tail / Brake light
Front flasher light
Rear flasher light
Meter light
Neutral indicator light
High beam indicator light
Turn indicator light
Tuning Fork Logo 12V 3.4Wx1
MainAdvanced)
Flywheel magneto
Lead acid
12V 2.5AH
(Halogen-HS1) 12V 35W/ 35W x 1
12V 5W/21W x 1
12V10Wx2
12V10Wx2
12V3.4Wx2
12V3.4Wx1
12V3.4Wx1
12V1.7Wx2
1OA